Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Qbot Payload Request (2023-03-13) M5"; flow:established,to_server; urilen:<21; http.method; content:"GET"; http.uri; content:".js?5"; fast_pattern; isdataat:!5,relative; content:!"="; pcre:"/^\/(?P<base_dir>[a-z]{2,4})\/(?P=base_dir)\.js\?5[0-9]{4}$/"; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; nocase; reference:md5,89e0d2845eb3f96e2682fdc370807e0a; classtype:trojan-activity; sid:2044569; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_03_13, deployment Perimeter, deployment SSLDecrypt, malware_family Qbot, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_08; target:src_ip;)